public class ItemTest extends ItemNk{

    private String tip;

    public ItemTest() {
        super("test_item");
    }

    @Override
    @SideOnly(Side.CLIENT)
    public void addInformation(ItemStack stack, EntityPlayer playerIn, List<String> tooltip, boolean advanced) {
        if(!(tip==null)) {
            tooltip.add("\u00a7a" + tip);
        }
    }


    @Override
    public EnumActionResult onItemUse(ItemStack stack, EntityPlayer playerIn, World worldIn, BlockPos pos, EnumHand hand, EnumFacing facing, float hitX, float hitY, float hitZ) {

        tip = worldIn.getBlockState(pos).getBlock().getLocalizedName();
        if (!worldIn.isRemote) {
            playerIn.addChatMessage(new TextComponentString("Block set to " + tip));
        }
        return EnumActionResult.SUCCESS;
    }
}